Thanks. I have discovered it is just Mon-Fri which would explain why I couldn’t find it for this weekend. There is however a bus from Santiago to Muxia so maybe I will just do that and not Finisterre- decisions!!
There might be still Muxia - Dumbria (change) - Fisterra, as the shorter connection via Cee does not work.
Dumbría is on the way from Santiago to Muxia, so you will find a Xunta Albergue (kitchen) there. Shopping facilities are very limited, so if you get in by bus buy in advance.